Mortality of red mullet (Mullus barbatus Linnaeus, 1758) on the Montenegrin shelf (South Adriatic)

Joksimović, Aleksandar; Regner, Slobodan; Gačić, Zoran

doi:10.2298/abs0903493j

Cited by 7 publications

(9 citation statements)

References 4 publications

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“…Jukic and Piccinetti (1981) and Haïdar (1970) have reported for the Northern Adriatic Sea an estimated L50 coincident with those found in this study. While Joksimović (2005) reported for the Montenegrin shelf a L50 value of 13.54 mm, for both sexes combined, higher than those estimated in this work. Moreover, the values reported in this study are comparable with what is reported for the Southern Tyrrhenian Sea (Micale et al 2007), the Mediterranean coast of Morocco (Layachi et al 2007) and the south of France (Bougis 1952), while they are higher than those reported for the North Aegean Sea (Vassilopoulou 1992;Kokokiris et al 2014) and Cyprus (Lividas 1988) and lower than those reported for the Ionian West Sea (Tursi et al 1994), the Aegean Turkish coast (Metin 2005), the Northern Tyrrhenian Sea (Voliani et al 1998) and the Tunisian coast (Gharbi and Ktari 1981).…”

Section: Discussioncontrasting

confidence: 82%

Reproductive biology characteristics of red mullet (Mullus barbatusL., 1758) in Southern Adriatic Sea and management implications

Carbonara¹,

Intini²,

Modugno

et al. 2015

Aquat. Living Resour.

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The main important reproductive aspects of Mullus barbatus, one of the most important target species for the fishery in the Mediterranean basin, have been studied on the basis of MEDITS trawl survey and sampling of commercial landing. The total length (TL) of females has been demonstrated to be positively correlated with egg sizes and plasmatic concentration of vitellogenin. The possible implications of these aspects on the management of red mullet resources are discussed in this work. Moreover, the relationship between TL and fecundity follows an exponential pattern with a temporal trend during the spawning season. These results represent an important input for more effective management measures, such as the seasonal closure of fishery in summertime. The frequency distribution of the oocytes' diameters showed an asynchronous ovarian organization with batch spawning pattern. Monthly variations in the gonadosomatic index and maturity stages percentage showed that males spawn during almost the entire year showed an increasing trend from November to June and a decreasing trend from July to October, while females in spawning phase are recorded from April to July, with peaks in May and June. The length at 50% maturity (L50) estimated respectively for females and males are 12.1 cm (±0.083) and 10.1 cm (±0.073).

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Section: Discussioncontrasting

confidence: 82%

Reproductive biology characteristics of red mullet (Mullus barbatusL., 1758) in Southern Adriatic Sea and management implications

Carbonara¹,

Intini²,

Modugno

et al. 2015

Aquat. Living Resour.

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“…The Φ′ values from LFDA were significantly higher compared to those derived from the otolith reading for both sexes. The female Φ′ values calculated from the otolith reading ranged between 1.848 36 and 2.686 37 , while those from LFDA ranged between 2.051 38 and 2.763 8 . The male Φ′ values calculated from the otolith reading ranged between 1.937 39 and 2.468 40 , while those from the LFDA ranged between 1.952 38 and 2.554 41 .…”

Section: Resultsmentioning

confidence: 97%

“…The female Φ′ values calculated from the otolith reading ranged between 1.848 36 and 2.686 37 , while those from LFDA ranged between 2.051 38 and 2.763 8 . The male Φ′ values calculated from the otolith reading ranged between 1.937 39 and 2.468 40 , while those from the LFDA ranged between 1.952 38 and 2.554 41 . In addition, the Φ′ values grouped by area (Mediterranean sub-region WM: Western Mediterranean; CM: Central Mediterranean; EM: Eastern Mediterranean) showed significant differences.…”

Section: Resultsmentioning

confidence: 97%

“…49 M22.520.339−0.9002.235otolithStrait of SicilyCM5.9210.6914.0916.5218.2419.4720.3520.9721.42Andaloro & Prestipino Giarritta 39 M23.390.158−2.8401.937otolithStrait of SicilyCM8.4610.6412.5014.0915.4516.6117.6018.4519.17Joksimović et al . 38 M17.8110.282−3.0131.952otolithSouth-East AdriaticCM10.2012.0713.4814.5415.3515.9516.4116.7517.01Present studyM20.8650.323−1.0142.148LFDASouth AdriaticCM5.839.9812.9815.1616.7317.8718.7019.3019.73Present study ### M22.480.39−0.7122.295LFDASouth AdriaticCM5.4510.9514.6717.1918.9020.0620.8421.3721.73Joksimović et al . 38 M17.8110.282−3.0131.952LFDaSouth-East AdriaticCM10.2012.0713.4814.5415.3515.9516.4116.7517.01SAMED 66 M20.30.602−0.5862.395LFDaIonianCM6.0312.4916.0217.9619.0219.6019.9120.0920.18SAMED 66 M20.20.64−0.2002.417...…”

Section: Resultsmentioning

confidence: 99%

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A holistic approach to the age validation of Mullus barbatus L., 1758 in the Southern Adriatic Sea (Central Mediterranean)

Carbonara

Intini

Kolitari

et al. 2018

Sci Rep

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The growth of Mullus barbatus has been widely studied using different methods, but no previous study has focused on age validation. The uncertainty in estimating the age of the red mullet by otolith reading is linked to the number of false-growth increments laid down before the annulus. The capture of red mullets in the early life stage allowed us to estimate their size at the metamorphosis from the pelagic to the demersal phase. The comparison between the metamorphosis size and the back-calculated length of the first growth increment clarified the position of the false growth increment on the otolith. Moreover, the analyses of the otolith marginal increments in adult and juvenile specimens allowed us to define the deposition patterns of their annuli. The modal components of the length–frequency distribution analysis (LFDA) were identified in the winter survey (ELEFAN and Bhattacharya methods), and they did not show significant differences from the length back-calculation of the annuli. Moreover, no significant differences were found between the growth curves calculated by otolith reading (back-calculation and direct otolith reading) and the LFDA. The agreement between the length–frequency results and the otolith age estimation either corroborated or indirectly validated the growth pattern estimated in the otoliths of the red mullet, mainly when the direct validation methods (e.g. mark-recapture, captivity, radiochemical) were difficult to implement, like the case of this species. The comparison of the results of the present work to previous Mediterranean studies showed agreement with the slow growth pattern.

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“…The discrepancies between the mortality rates from different localities can probably be attributed to various factors such as different ecological conditions and intensive fishing activities between the localities and unequal precision of employed various methods (Joksimović et al, 2009) Some of the results in previous studies about spawning period and length at first maturity of S. japonicus in different localities are given in Table 6. Spawning periods of fish vary with respect to their species and could attributed to the ecological differences such as stagnant or running water, temperature and quality of food (Nikolsky, 1963).…”

Section: Discussionmentioning

confidence: 99%

Untitled

Cengız¹

2012

Turk. J. Fish. Aquat. Sci.

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Age, growth, mortality and reproduction of the chub mackerel (Scomber japonicus Houttuyn, 1782) , t 0 =-2.13 year for all samples. It was observed that spawning period occured between June and August. The length at first maturity was estimated as 18.0 cm for all samples. Total mortality rate (Z), natural mortality rate (M), fishing mortality rate (F) and exploitation rate (E) of the chub mackerel were 0.91 year -1 , 0.34 year -1 , 0.57 year -1 and 0.62 year -1 , respectivelyKeywords: Stock structure.

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Mortality of red mullet (Mullus barbatus Linnaeus, 1758) on the Montenegrin shelf (South Adriatic)

Cited by 7 publications

References 4 publications

Reproductive biology characteristics of red mullet (Mullus barbatusL., 1758) in Southern Adriatic Sea and management implications

Reproductive biology characteristics of red mullet (Mullus barbatusL., 1758) in Southern Adriatic Sea and management implications

A holistic approach to the age validation of Mullus barbatus L., 1758 in the Southern Adriatic Sea (Central Mediterranean)

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